PraveenReddy

• Sep 28th, 2005

 

Add two variables and assign the value into First Variable.Subtract the Second value with the Resul Value. and assign to Second Variable.Subtract the Result of First Variable With Result of Second Variable and Assign to First Variable.EX:Int a=5,b=10;a=a+b; b=a-b; a=a-b;

gpp

• Oct 19th, 2005

 

xor the 2 variables to swap without using a third variable.

example x=A, y=B

  x = x ^ y ;
  y = x ^ y ; //y=A after this step
  x = x ^ y ; //x=B after this step

Ashwini

• Oct 26th, 2005

 

step1>: a=a+b; step2>:b=a-b;step3>:a=a-b;

 

Devidas Sonawane

• Oct 26th, 2005

 

U can use out following Options.

Option 1) a=a*b; b=a/b; a=a/b;

Option 2) a=a/b; b=a*b; a=b*a;

Option 3) a=a-b; b=a+b; a=a+b;

Option 4) a=a+b; b=a-b; a=a-b; 

Debasish Dutta Roy

• Jan 16th, 2006

 

Always use the XOR operation as the answer provided in solution 1 can produce overflows

sujatham

 Profile Answers by sujatham Questions by sujatham

• Aug 9th, 2007

 

1.
void  swap(int x,int y)
{
x ^= y ^= x ^= y;
}
2.
void swap(int a,int b)
{
a=a+b;  
 
b=a-b;

 
a=a-b;
}

sampra

 Profile Answers by sampra 

• Feb 14th, 2008

 

Int a=5,b=10;a=a+b; b=a-b; a=a-b;